B.V Sc & A.H

Methyl Red-Voges-Proskauer test(MR-VP)/ Acetoin Production Assay Basic principle: Methyl red test The methyl-red test is used to detect the organism’s ability to produce sufficient acid from glucose fermentation and maintenance of the acidic environment (pH < 4.5) as shown by a colour change of the methyl-red indicator that is added at end of incubation of […]

Endemic: Usual frequency or constant presence of disease. Epidemic: More than usual frequency of occurance. Pandemic: Epidemic+ Widespread Sporadic: Occurs infrequently,haphazardly,irregularly or occasionally from time to time in a few isolated places withoud any pattern.

Basic Principle It is used to prepare mounts for microscopic study of fungi. This is most widely used method for laboratory culture rather than clinical specimens. Materials: a. Lactophenol cotton blue stain b. Fungal culture c. Microscopic glass slides and cover glass d. Other essentials Stain composition: Lactic acid 20 g Phenol 20 g Glycerin

This is a special type of staining method for few selective groups of bacteria which are having mycolic acid on their cell wall. Certain bacteria like Mycobacterium sp. do not stain readily by simple staining or even Gram’s Method of differential staining. It is because of high lipid (mycolic acid) content of their cell wall.

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  Jump to Genome Virus   Genome Type Capsid Symmetry Morphology Envelope Replication Isolation               ssRNA+ Arteriviridae Linear Icosahedral Sperical Enveloped Cytoplasm Astroviridae Linear Icosahedral Isometric Non-Enveloped Cytoplasm Caliciviridae Vesicular Exanthema of Swine Linear Icosahedral Isometric Non-Enveloped Cytoplasm Coronaviridae Infectious Bronchitis,SARS-CoV-2,TGE Linear Helical Sperical Enveloped Cytoplasm Allantoic Cavity Flaviviridae